/*******************************************************************************
 * Copyright (c) 2000, 2003 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials 
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.update.internal.operations;

import java.lang.reflect.*;

import org.eclipse.core.runtime.*;
import org.eclipse.update.configuration.*;
import org.eclipse.update.core.*;
import org.eclipse.update.operations.*;

public class RevertConfigurationOperation extends Operation implements IRevertConfigurationOperation {

	private IInstallConfiguration config;
	private IProblemHandler problemHandler;

	public RevertConfigurationOperation(
		IInstallConfiguration config,
		IProblemHandler problemHandler) {
		super();
		this.config = config;
		this.problemHandler = problemHandler;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.update.operations.IOperation#execute(org.eclipse.core.runtime.IProgressMonitor)
	 */
	public boolean execute(IProgressMonitor monitor, IOperationListener listener)
		throws CoreException, InvocationTargetException {
		IStatus status =
			OperationsManager.getValidator().validatePendingRevert(config);
		if (status != null && status.getCode() == IStatus.ERROR) {
			throw new CoreException(status);
		}

		try {
			ILocalSite localSite = SiteManager.getLocalSite();
			localSite.revertTo(config, monitor, problemHandler);
			localSite.save();
			return true;
		} catch (CoreException e) {
			UpdateUtils.logException(e);
			throw e;
		}
	}
}